74874952849 has 4 divisors (see below), whose sum is σ = 74912448564. Its totient is φ = 74837457136.

The previous prime is 74874952843. The next prime is 74874952861. The reversal of 74874952849 is 94825947847.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27603496449 + 47271456400 = 166143^2 + 217420^2 .

It is a cyclic number.

It is not a de Polignac number, because 74874952849 - 2³¹ = 72727469201 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74874952843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18744862 + ... + 18748855.

It is an arithmetic number, because the mean of its divisors is an integer number (18728112141).

Almost surely, 2^74874952849 is an apocalyptic number.

It is an amenable number.

74874952849 is a deficient number, since it is larger than the sum of its proper divisors (37495715).

74874952849 is a wasteful number, since it uses less digits than its factorization.

74874952849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37495714.

The product of its digits is 162570240, while the sum is 67.

The spelling of 74874952849 in words is "seventy-four billion, eight hundred seventy-four million, nine hundred fifty-two thousand, eight hundred forty-nine".